another one of my 340s was a .030 stock stroke Mechart hollow dome stainless rods arias hi dome pistons with the same X heads as mentioned above in a tube chassi 2500 same tranny and conv as mentioned but with a quick change rear I think it was a 5.80 or 6.10 gear 32 x 15 tire through all three gears in 1/8 mile ran 6.80s @ 110mph also with a 800 c&s aersol alk.carb and o ya the dist was loose timing backed off in the 20s. ppl couldn't understand how a car could go through the 1/8th in all 3 gears crossing the line at 7000 only got to run the combo that one day as the track was shut down afterwards never to be opened again.